Is there a pin-compatible replacement for HC-XHB-8A?

JST's B8B-XH-AM(LF)(SN) is a potential pin-compatible replacement, offering the same 8-pin, 2.5mm pitch, straight configuration. Verification of the PCB footprint, especially for the added locating boss, is essential before considering it a drop-in replacement.

HC-XHB-8A Alternatives, Datasheet & Cross Reference | HCTL

Finding a replacement for the HC-XHB-8A 8-pin 2.5mm pitch straight header involves matching the JST XH-compatible footprint and electrical ratings. Several alternatives exist, but careful review of orientation and mechanical features is required.

AI replacement insight

Electrical risklow

Ratings are standard and easily matched.

Package riskmedium

Orientation (straight vs right-angle) and features like locating bosses must be checked.

Sourcing risklow

The JST XH series and its clones are widely available from multiple vendors.

Can it be replaced directly?

No verified direct drop-in replacement is confirmed without user validation. The JST B8B-XH-AM(LF)(SN) is the closest functional and form-factor match but has a locating boss that requires checking the PCB layout.

Best replacement path

The most reliable path is to use a JST XH series straight header like B8B-XH-AM(LF)(SN), verifying the PCB can accommodate its locating boss.

Main risk

The primary risk is mechanical incompatibility, either from incorrect orientation (right-angle vs. straight) or different connector family housings that will not mate.

Recommended alternatives

JST straight header with matching specs; check for PCB boss compatibility.

View details

Alternative comparison matrix

Feature / factor	HC-XHB-8A	B8B-XH-AM(LF)(SN)	S8B-XH-A(LF)(SN)	XD-XH-8AW-G	Compatibility / risk
Package	Through Hole, Straight	Through Hole, Straight, with Boss	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Straight, with Boss / Through Hole, Right Angle — Candidate has a locating boss requiring PCB hole.; S8B-XH-A(LF)(SN): Candidate is right-angle, target is straight.; XD-XH-8AW-G: Candidate is right-angle, target is straight.
Pitch	2.5mm	2.5mm	2.5mm	2.5mm	2.5mm — matched; S8B-XH-A(LF)(SN): matched; XD-XH-8AW-G: matched
Current	3A	3A	3A	3A	3A — matched; S8B-XH-A(LF)(SN): matched; XD-XH-8AW-G: matched
Voltage	250V	250V	250V	-	250V — matched; S8B-XH-A(LF)(SN): matched
Manufacturer	HCTL	JST	-	-	JST — Original series manufacturer.

Application & sourcing insights

Questions & answers

The JST B8B-XH-AM(LF)(SN) is a strong candidate as it matches the straight orientation, pitch, and electrical ratings. However, it includes a PCB locating boss which must be compatible with your board layout.

When replacing the HC-XHB-8A, check for three main risks: 1) Mechanical Mismatch: Ensure the replacement is a straight/vertical header, not right-angle. 2) Footprint Incompatibility: Some alternatives have features like locating bosses that require specific PCB holes. 3) Mating Incompatibility: Only use replacements from the JST XH family or verified clones to ensure they mate with existing cable assemblies.